Eoganachta

The Eoganachta were an Irish dynasty centered on Caisil which dominated the Munster region of southern Ireland from 370 AD to 978 AD. It was founded by Conall Corc and named for his ancestor Eogan Mor (who was possibly of Gallic descent), and its rulers were known to be sophisticated and gentle. The Eoganachta were the ancestors of the clans O'Callaghan, MacCarthy, O'Donoghue, MacGillycuddy, O'Keeffe, O'Moriarity, O'Sullivan, MacAuliffe, MacGillycuddy, O'Long, O'Driscoll, O'Leary, O'Carroll, and Scannell, and their last king Mael Muad mac Brain died in 978 AD.